Where is the best place to back up deleted or deleted web pages so that Google can find them?

Question

Backup

In general, this applies to any site.
But for example, let's take Toaster. Let's say there is a good, interesting question, well designed. No one complains, does not condemn, on the contrary - people understand, answer, many, thoughtfully, detailed answers, discussions in the comments. Then a day later, I mark two answers as solutions (deservedly). The question is closed.
After 3 days, the question is deleted.
What???
I previously had the idea that the author of the question and all those who answered could see it even after deletion, and I detailed the idea long ago in the support. But we don't seem to be waiting for the implementation.
Hence the question - where is it better to mirror data from the site, preferably in its original form?
I know that you can, for example, just download to your hard drive, but that's not it. Sometimes you google questions and stumble upon your own questions or answers. Kind regards from the past. And the saved questions are not googled, alas.
And here it is also important that there are no glitches in the copy. For example, if there are comments in the question, then so that they open (now they do not open on the Toaster with disabled JS).

spoiler

Если в вопросе или в ответах есть спойлер, то чтобы он тоже открывался.

In general, if someone has real experience with similar services for backing up web pages, then please share your knowledge. Without deception in the form of subsequent removal of a copy, with indexing by search engines and a simple interface. Are there any at all?

Answer 1

web.archive.org . Slowpoke, but they know their stuff.